Log in

Relevant bibliographies by topics / Strontium oxide / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Strontium oxide.

Dissertations / Theses on the topic 'Strontium oxide'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Strontium oxide.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Zimmermann, Michelle (Michelle Anne). "Scanning tunneling spectroscopy of lead-substituted bismuth strontium copper oxide." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40919.

Full text

Abstract:

Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Physics, 2007.<br>Includes bibliographical references (leaves 39-43).<br>The hole-doped cuprate Bi ... is doped with lead to the solubility limit of x = 0.38 and studied using STM/STS in the overdoped regime where Tc < 2K. Despite the high lead content, residual supermodulations are observed in the BiO plane. In agreement with previous studies on (Pb,Bi)-2201, there is no separation of the sample into Pb-rich and Pb-poor domains, nor is there a spectral correlation with Pb location. Differential tunneling conductance is modeled usi

APA, Harvard, Vancouver, ISO, and other styles

2

Cumming, Denis John. "Cerium-doped strontium titanate materials for solid oxide fuel cells." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/11988.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Price, Robert. "Metal/metal oxide co-impregnated lanthanum strontium calcium titanate anodes for solid oxide fuel cells." Thesis, University of St Andrews, 2018. http://hdl.handle.net/10023/16018.

Full text

Abstract:

Solid Oxide Fuel Cells (SOFC) are electrochemical energy conversion devices which allow fuel gases, e.g. hydrogen or natural gas, to be converted to electricity and heat at much high efficiencies than combustion-based energy conversion technologies. SOFC are particularly suited to employment in stationary energy conversion applications, e.g. micro-combined heat and power (μ-CHP) and base load, which are certain to play a large role in worldwide decentralisation of power distribution and supply over the coming decades. Use of high-temperature SOFC technology within these systems is also a vital

APA, Harvard, Vancouver, ISO, and other styles

4

Jackson, Samuel. "Thermoelectric n-type oxide materials for energy generation." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/thermoelectric-ntype-oxide-materials-for-energy-generation(1fa87b0b-b734-485e-a1a3-6e08d929a109).html.

Full text

Abstract:

The thermoelectric properties of lanthanum-doped strontium titanate (LSTO) were investigated for high temperature applications. Ceramics with the formulation La(2x/3)Sr(1-x)TiO(3-delta) (x = 0.1, 0.3, 0.5, 0.7, 0.9) were produced using the conventional mixed oxide route. After 18 hours of milling the powders were calcined at 1373 K for 4 hours and sintered at 1733 K (± 180 K/hour) for 4 hours in air. SEM, XRD, and TEM techniques were employed to characterise the microstructure of the ceramics as well as density measurements. Subsequently the electrical conductivity, Seebeck coefficient, and th

APA, Harvard, Vancouver, ISO, and other styles

5

Chung, Kimberly. "Investigation of the structure and properties of lanthanum strontium nickel oxide." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 360 p, 2008. http://proquest.umi.com/pqdweb?did=1609293431&sid=5&Fmt=2&clientId=8331&RQT=309&VName=PQD.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Bania, William Roger 1964. "Spray pyrolysis processing of yttrium-barium-copper-oxide and bismuth-strontium-calcium-copper-oxide superconducting thin films." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277080.

Full text

Abstract:

The purpose of this investigation was to explore the processing parameters involved in the production of thin film superconductors by spray pyrolysis processing (SPP). The present study is an attempt to optimize the many parameters in SPP. The specific parameters studied were substrate temperature, carrier gas flow rate, substrate materials, solution stoichiometry, spray rate, concentration, starting materials, and substrate to nozzle distance. The effect of these parameters on film stoichiometry and the anticipated superconducting behavior were investigated at some length. Films were routinel

APA, Harvard, Vancouver, ISO, and other styles

7

Gharavi-Naeini, Jafar. "Doping and temperature dependence of the Raman spectra lanthanum strontium copper oxide." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0028/NQ51865.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Small, Troy. "Sorption of strontium to bacteria, Fe(III) oxide and bacteria-Fe(III) oxide composites in relation to contaminant fate." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0022/MQ50405.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Wang, Li. "Study of sintering behaviours and mechanical properties of barium strontium cobalt iron oxide ceramics." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/study-of-sintering-behaviours-and-mechanical-properties-of-barium-strontium-cobalt-iron-oxide-ceramics(cefae647-0ab8-4f69-9aa6-f91c6aa8239e).html.

Full text

Abstract:

The thesis studies the sintering behaviours and mechanical properties of perovskite-structured Ba0.5Sr0.5Co0.8Fe0.2O3-δ (BSCF) ceramics. The sintering behaviours of BSCF are studied by sintering BSCF powder using a series of sintering temperatures and dwell times. Under all circumstances, only a cubic perovskite structure is identified in as-sintered samples. The relative density of BSCF increases with increasing sintering temperature and dwell time, but shows a more significant increase with increasing temperature. While the grain size increases with increasing sintering temperature and dwell

APA, Harvard, Vancouver, ISO, and other styles

10

Norman, Colin John. "Synthesis and characterisation of barium strontium cobalt iron oxide mixed ionic and electronic conductors." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/synthesis-and-characterisation-of-barium-strontium-cobalt-iron-oxide-mixed-ionic-and-electronic-conductors(f6a8cb7b-388d-4543-b340-d6d0f33c1d84).html.

Full text

Abstract:

Oxygen separation membrane technology is an alternative to cryogenic distillation for the production of oxygen. Barium strontium cobalt iron oxide (BSCF, Ba0.5Sr0.5Co0.8Fe0.2O3-d) is one of the candidate membrane materials for this application. A robust wet-chemical synthetic route for the synthesis of BSCF has been developed. The route comprises reverse precipitation from a mixed metal nitrate solution at pH> 10 and uses a minimum amount of reagents. In particular there are no organic additives which need to be burnt off. All the metal ions precipitated simultaneously but a single phase was n

APA, Harvard, Vancouver, ISO, and other styles

11

Sun, Zhe. "Angle-resolved photoemission studies on bi-layer colossal magnetoresistive oxides lanthanum(2-2x)strontium(1+2x)manganese(2)oxide(7)." Diss., Connect to online resource, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3239456.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Podpirka, Adrian Alexander. "Studies on Synthesis, Structural and Electrical Properties of Complex Oxide Thin Films: Ba1-xSrxTiO3 and La2-xSrxNiO4." Thesis, Harvard University, 2012. http://dissertations.umi.com/gsas.harvard:10247.

Full text

Abstract:

High performance miniaturized passives are of great importance for advanced nanoelectronic packages for several applications including efficient power delivery. Low cost thin film capacitors fabricated directly on package (and/or on-chip) are an attractive approach towards realizing such devices. This thesis aims to explore fundamental frequency dependent dielectric and insulating properties of thin film high-k dielectric constant in the perovskite and perovskite-related complex oxides. Throughout this thesis, we have successfully observed the role of structure, strain and oxygen stoichiometr

APA, Harvard, Vancouver, ISO, and other styles

13

Longworth, Sarennah Jane Pearce. "Transmission electron microscopy of potentials at grain boundaries in strontium titanate and zinc oxide electroceramics." Thesis, University of Cambridge, 2007. https://www.repository.cam.ac.uk/handle/1810/252058.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Wan, Xuewen. "Effects of longitudinal disorder on the magnetic field distribution in bismuth strontium calcium copper oxide." W&M ScholarWorks, 2002. https://scholarworks.wm.edu/etd/1539623413.

Full text

Abstract:

Transverse Field muon spin relaxation (TF-muSR) experiments were performed in external magnetic fields 1.0, 2.7, 3.0, 4.5, 5.5, 6.0 and 7.0 T along the Bi2212 crystalline c-axis. For the first time, the heterodyned fitting analysis technique shows that the field profiles on the ab basal planes of single crystal Bi2212 are symmetric in all experimental fields 1.0--7.0 T and at all experimental temperatures 2.0-90.0 K. The muon spin relaxation rates due to the mixed state of Bi2212 were found to increase linearly from 0 mus-1 at the transition temperature, 90.0 K, to about 1.0 mus -1 at the low

APA, Harvard, Vancouver, ISO, and other styles

15

Pfluge, Matthew Edward. "Study of praseodymium strontium manganite for the potential use as a solid oxide fuel cell cathode." Thesis, Montana State University, 2005. http://etd.lib.montana.edu/etd/2005/pfluge/PflugeM0505.pdf.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Yeandel, Stephen. "Atomistic simulation of thermal transport in oxide nanomaterials." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.687351.

Full text

Abstract:

The aim of this work has been to use atomistic computer simulation methods to calculate the thermal conductivity and investigate factors that will modify the behaviour when applied to three different oxide materials: MgO, SiO2 and SrTiO3. These were chosen as they represent distinct classes of materials and are substrates for thermoelectric devices, where one of the primary goals is to tailor the system to reduce the thermal conductivity. Chapter 1 introduces thermoelectric concepts, gives a background of the theory and a review of various important thermoelectric materials. In Chapter 2 an ov

APA, Harvard, Vancouver, ISO, and other styles

17

Schmidt, Marek Wojciech, and Marek Schmidt@rl ac uk. "Phase formation and structural transformation of strontium ferrite SrFeOx." The Australian National University. Research School of Physical Sciences and Engineering, 2001. http://thesis.anu.edu.au./public/adt-ANU20020708.190055.

Full text

Abstract:

Non-stoichiometric strontium iron oxide is described by an abbreviated formula SrFeOx (2.5 ≤ x ≤ 3.0) exhibits a variety of interesting physical and chemical properties over a broad range of temperatures and in different gaseous environments. The oxide contains a mixture of iron in the trivalent and the rare tetravalent state. The material at elevated temperature is a mixed oxygen conductor and it, or its derivatives,can have practical applications in oxygen conducting devices such as pressure driven oxygen generators, partial oxidation reactors in electrodes for solid oxide fuel cells (SOFC).

APA, Harvard, Vancouver, ISO, and other styles

18

Cuadra, Amalia C. "Metal organic chemical vapor deposition and atomic layer deposition of strontium oxide films on silicon surfaces." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 164 p, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:1440589.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Kim, Cheol Jin. "Laser float zone growth of superconducting bismuth strontium calcium copper oxide fibers: Characterization and phase equilibria." Case Western Reserve University School of Graduate Studies / OhioLINK, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=case1059411650.

Full text

APA, Harvard, Vancouver, ISO, and other styles

20

Cooper, Celeste Eaton. "Degradation in Performance of Lanthanum Strontium Manganite Based Solid Oxide Fuel Cell Cathodes Under Accelerated Testing." Case Western Reserve University School of Graduate Studies / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=case1485524881843845.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Yang, Jun. "Studies on Polarization Behavior and Microstructure of Strontium-doped Lanthanum Manganite Cathodes for Solid Oxide Fuel Cells." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151984.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Cooper, Matthew E. "Energy Production from Coal Syngas Containing H2S via Solid Oxide Fuel Cells Utilizing Lanthanum Strontium Vanadate Anodes." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1219867679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Wohlwend, Jennifer Lynne. "Computational study of the deposition of metal-oxide thin films on strontium titanate morphology and growth modes /." [Gainesville, Fla.] : University of Florida, 2009. http://purl.fcla.edu/fcla/etd/UFE0024973.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Macias, Montiel Javier. "SrVO3-based anode materials for hydrocarbonfueledsolid oxide fuel cells." Doctoral thesis, Universidade de Aveiro, 2017. http://hdl.handle.net/10773/17432.

Full text

Abstract:

Mestrado em Ciência e Engenharia de Materiais<br>This work was focused on the assessment of SrVO3-based perovskites as prospective anodes for hydrocarbon-fueled solid oxide fuel cells or electrocatalysts for other fuel conversion processes. The main motivation was the known sulfur tolerance of vanadium-based oxide compounds, their inhibition of carbon deposition, when compared to metallic electrolacalysts, the stability of SrVO3 under very reducing conditions imposed by fuels, and its high electrical conductivity when compared with alternative perovskite materials proposed for conversion

APA, Harvard, Vancouver, ISO, and other styles

25

Cooper, Matthew E. "Energy production from coal syngas containing H₂S via solid oxide fuel cells utilizing lanthanum strontium vanadate anodes." Ohio : Ohio University, 2008. http://www.ohiolink.edu/etd/view.cgi?ohiou1219867679.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

CHIBA, RUBENS. "Sintese, processamento e caracterizacao das meia-celulas de oxido solido catodo/eletrolito de manganito de lantanio dopado com estroncio/zirconia estabilizada com itria." reponame:Repositório Institucional do IPEN, 2010. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9503.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:27:23Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:51Z (GMT). No. of bitstreams: 0<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

APA, Harvard, Vancouver, ISO, and other styles

27

CHIBA, RUBENS. "Obtencao e caracterizacao de manganito de lantanio dopado com estroncio para aplicacao em celulas a combustivel de oxido solido." reponame:Repositório Institucional do IPEN, 2005. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11234.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:49:48Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:01:35Z (GMT). No. of bitstreams: 1 10383.pdf: 4486773 bytes, checksum: 83c80c2cf5b3151ff95cc7463b14a364 (MD5)<br>Dissertacao (Mestrado)<br>IPEN/D<br>Intituto de Pesquisas Energeticas e Nucleares, IPEN/CNEN-SP

APA, Harvard, Vancouver, ISO, and other styles

28

Lu, Yunxiang. "Study of electrochemical performance of strontium doped lanthanum cobalt oxides using electrochemical impedance spectroscopy and microelectrode array cell design /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9818.

Full text

APA, Harvard, Vancouver, ISO, and other styles

29

Chen, Xiyong. "Thermo-mechanical/structural properties and oxygen permeation behavior of mixed ionic electronic conductors La(1-x)Sr(x)CoO(3-delta) /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/9893.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Milliken, Damion Alexander. "Uranium doping of silver sheathed bismuth-strontium-calcium-copper-oxide superconducting tapes for increased critical current density through enhanced flux pinning." Access electronically, 2004. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20040810.154223/index.html.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

Lu, Lanying. "Studies of anode supported solid oxide fuel cells (SOFCs) based on La- and Ca-Doped SrTiO₃." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/7068.

Full text

Abstract:

Solid oxide fuel cells (SOFCs) have attracted much interest as the most efficient electrochemical device to directly convert chemical energy to usable electrical energy. The porous Ni-YSZ anode known as the state-of-the-art cermet anode material is found to show serious degradation when using hydrocarbon as fuel due to carbon deposition, sulphur poisoning, and nickel sintering. In order to overcome these problems, doped strontium titanate has been investigated as a potential anode material due to its high electronic conductivity and stability in reducing atmosphere. In this work, A-site defici

APA, Harvard, Vancouver, ISO, and other styles

32

FLORIO, DANIEL Z. de. "Analise de eletrolitos de ZrO sub(2):Y sub(2) O sub(3) + B sub(2) O sub(3) e de eletrodos de La sub(0,8) Sr sub(0,2) Co sub (0,8) Fe sub (0,2) O sub (3-delta) por espectroscopia de impedancia." reponame:Repositório Institucional do IPEN, 2003. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11130.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:48:42Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:59:46Z (GMT). No. of bitstreams: 1 09305.pdf: 5404217 bytes, checksum: 19eda8ad49f8cd247304fef0fb69c1bc (MD5)<br>Tese (Doutoramento)<br>IPEN/T<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

APA, Harvard, Vancouver, ISO, and other styles

33

Goble, Nicholas James. "ELECTRONIC TRANSPORT AT SEMICONDUCTOR AND PEROVSKITE OXIDE INTERFACES." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1454002713.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Philippen, Jan [Verfasser], Detlef [Akademischer Betreuer] Klimm, and Martin [Akademischer Betreuer] Lerch. "Fiber crystal growth of cerium doped calcium scandate, strontium yttrium oxide, and tristrontium silicate / Jan Philippen. Gutachter: Martin Lerch ; Detlef Klimm. Betreuer: Detlef Klimm." Berlin : Technische Universität Berlin, 2013. http://d-nb.info/1065665237/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

RODRIGUES, RANIERI A. "Estudo da formação de fases secundárias no compósito LSM/YSZ." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11563.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:53:18Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:59:02Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP

APA, Harvard, Vancouver, ISO, and other styles

36

Ramadan, Amr Hazem Helmy [Verfasser], Souza Roger A. [Akademischer Betreuer] De, and Arne [Akademischer Betreuer] Lüchow. "Simulation studies of extended defects in the model system of the functional oxide strontium titanate / Amr Hazem Helmy Ramadan ; Roger A. De Souza, Arne Lüchow." Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1130590682/34.

Full text

APA, Harvard, Vancouver, ISO, and other styles

37

Hibino, Takashi, Atsuko Tomita, Mitsuru Sano, et al. "Single-Chamber SOFCs Using Dimethyl Ether and Ethanol." The Electrochemical Society, 2007. http://hdl.handle.net/2237/18431.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Etchison, Kerry C. "The Pure Rotational Spectra of Diatomics and Halogen-Addition Benzene Measured by Microwave and Radio Frequency Spectrometers." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc30454/.

Full text

Abstract:

Two aluminum spherical mirrors with radii of 203.2 mm and radii of curvature also of 203.2 mm have been used to construct a tunable Fabry-Perót type resonator operational at frequencies as low as 500 MHz. The resonator has been incorporated into a pulsed nozzle, Fourier transform, Balle-Flygare spectrometer. The spectrometer is of use in recording low J transitions of large asymmetric molecules where the spectra are often greatly simplified compared to higher frequency regions. The resonators use is illustrated by recording the rotational spectra of bromobenzene and iodobenzene. In related exp

APA, Harvard, Vancouver, ISO, and other styles

39

Nadouf, Mohammed. "Synthese et etude de poudres submicroniques de titanate de baryum et de ses solutions solides avec le strontium." Université Louis Pasteur (Strasbourg) (1971-2008), 1986. http://www.theses.fr/1986STR13129.

Full text

Abstract:

On etudie les solutions solides entre titanate de baryum et titanate de strontium. Deux methodes de synthese de ces perovskites sont abordees : la methode ceramique classique, ou l'on fait reagir des solides a haute temperature, et la methode oxalique qui fait intervenir la preparation d'un sel mixte que l'on decompose a basse temperature. Les relations entre la nature des sels des oxydes, le ph de precipitation, la temperature de reaction ou de precipitation et les caracteristiques structurales et proprietes physiques des ceramiques frittees sont etudiees

APA, Harvard, Vancouver, ISO, and other styles

40

Laurent, Marie-José. "Physico-chimie du frittage basse temperature d'un materiau dielectrique de type iii a base de titanate de strontium dope." Caen, 1988. http://www.theses.fr/1988CAEN2008.

Full text

Abstract:

On propose de preparer un materiau a haute constante dielectrique a couches d'arret aux joints de grains par un frittage a basse temperature (1100**(o)c) de srtio::(3) dope et reduit en presence d'un sel de lithium. La formation de la seconde phase isolante constituee de bi::(2)o::(3) est envisagee au cours de ce meme cycle thermique. La poudre de srtio::(3) est prealablement dopee par des composes de structure perovskite afin de faciliter l'incorporation du dopant, et reduite a 1350**(o)c sous atmosphere reductrice. La physico-chimie de frittage a 1100**(o)c en presence d'un sel de lithium et

APA, Harvard, Vancouver, ISO, and other styles

41

REGRENY, RICARD ODILE. "Etude de la synthese et frittage d'oxynitrures de type perovskite en vue de leur application en tant que materiaux dielectriques." Rennes 1, 1988. http://www.theses.fr/1988REN10127.

Full text

Abstract:

On a optimise la synthese d'oxynitrures de type abo::(2)n, de structure perovskite et presentant des caracteristiques dielectriques interessantes, afin d'obtenir des produits purs en grande quantite: batao::(2)n, srtao::(2)n, banbo::(2)n, srnbo::(2)n, ainsi que des solutions solides de ces composes. On a ensuite etudie leur densification sous atmosphere neutre ou non oxydante, avec ou sans ajouts de frittage, cherchant a obtenir une ceramique dielectrique. Une telle ceramique pourrait, utilisee comme materiau de base pour condensateurs multicouches, remplacer le batio::(3), qui doit etre cofri

APA, Harvard, Vancouver, ISO, and other styles

42

Dewberry, Christopher Thomas. "Advancements in Instrumentation for Fourier Transform Microwave Spectroscopy." Thesis, University of North Texas, 2011. https://digital.library.unt.edu/ark:/67531/metadc84308/.

Full text

Abstract:

The efforts of my research have led to the successful construction of several instruments that have helped expand the field of microwave spectroscopy. The classic Balle-Flygare spectrometer has been modified to include two different sets of antenna to operate in the frequency ranges 6-18 GHz and 18-26 GHz, allowing it to function for a large range without having to break vacuum. This modified FTMW instrument houses two low noise amplifiers in the vacuum chamber to allow for the LNAs to be as close to the antenna as physically possible, improving sensitivity. A new innovative Balle-Flygare type

APA, Harvard, Vancouver, ISO, and other styles

43

Lauret, Hervé. "Propriétés électriques et électrochimiques de manganites de lanthane dopées comme matériau de cathode pour pile à combustible à oxyde électrolyte solide." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0053.

Full text

Abstract:

Ce travail consiste en l'etude de materiaux de cathode pour les piles a combustible haute temperature. Ces materiaux ont pour formule generale la1-xsrxmno3 et (la1-yyy)0,5sr0,5mno3. Dans un premier chapitre nous faisons le point sur l'etat des recherches sur les piles a combustible a oxyde electrolyte solide et leurs constituants. Le deuxieme chapitre presente la synthese des echantillons ainsi que les differents dispositifs de mesures. Le chapitre trois est consacre a la caracterisation physique et electrique des echantillons. Nous avons montre en particulier que le dopage a l'yttrium diminua

APA, Harvard, Vancouver, ISO, and other styles

44

VARGAS, REINALDO A. "Síntese e caracterização de manganito de neodímio dopado com estrôncio utilizado como catodo em células a combustível de óxido sólido de temperatura intermediaria." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11567.

Full text

Abstract:

Made available in DSpace on 2014-10-09T12:53:21Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:56Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

APA, Harvard, Vancouver, ISO, and other styles

45

Gong, Minhui. "Etude des électrodes sur batterie zinc-air." Electronic Thesis or Diss., Université Paris sciences et lettres, 2021. http://www.theses.fr/2021UPSLC024.

Full text

Abstract:

La batterie zinc-air devient une alternative potentielle à la batterie lithium-ion en raison de son avantage en termes de ressources, de sa densité d'énergie théorique élevée et de son faible potentiel de risque pour la sécurité. Ce travail met l'accent sur les problèmes conventionnels impliquant à la fois l'électrode à zinc et à air, visant à l'application.Pour l'électrode de zinc, deux configurations maison sont utilisées pour étudier la croissance des dendrites de zinc et l'évolution de l'hydrogène pendant le dépôt avec un électrolyte statique et en flux, respectivement. On trouve qu'une co

APA, Harvard, Vancouver, ISO, and other styles

46

Vijay, Dilip P. "Reliability and processing of ferroelectric thin film capacitors with emphasis on fatigue and etching." Diss., This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06062008-162341/.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Gao, Hantian. "Nanoscale Characterization and Control of Native Point Defects in Metal Oxide Semiconductors and Device Structures." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1618838504594148.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Lu, Huanghai. "Preparation and performance of BSCF-based Mixed Ionic-Electronic Conducting (MIEC) ceramics." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/preparation-and-performance-of-bscfbased-mixed-ionicelectronic-conducting-miec-ceramics(bef05576-e133-4d72-825b-27d8982a2a8d).html.

Full text

Abstract:

Preparation and performance of the perovskite-type barium strontium cobalt iron oxide (Ba_0.5 Sr_0.5 Co_0.8 Fe_0.2 O_(3-δ), BSCF) and its doped compositions were studied in this dissertation. Three transition metals (copper, nickel and niobium) were substituted into the parent BSCF at various ratios to create the formula Ba_0.5 Sr_0.5 (Co_0.8 Fe_0.2)_(1-x) M_x O_(3-δ) (0.02≤x≤0.30; M=Cu,Ni or Nb). Two synthetic methods (solid-state reaction and wet chemical co-precipitation) were developed for the preparation of starting powders. In the previous reports [1, 2], BSCF ceramics suffered from insu

APA, Harvard, Vancouver, ISO, and other styles

49

Ruano, Merchán Catalina. "Synthesis and characterization of 2D complex oxide films in the SrTiO₃/Pt(111)/Al₂O₃(0001) system." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0039.

Full text

Abstract:

La formation d’oxydes quasicristallins dodécagonaux 2D (OQC), ainsi que celle de phases approximantes associées ont été récemment rapportées dans des films minces dérivés des pérovskites BaTiO₃ ou SrTiO₃, déposés sur des monocristaux de Pt orientés (111). Ces structures 2D ajoutent de nouvelles fonctionnalités aux films ultra-minces d’oxydes ternaires supportés sur des métaux à l’approche de la limite 2D. Ici, nous utilisons une approche d’empilement de couches minces dans laquelle le monocristal est remplacé par une couche tampon de Pt(111), déposée par MBE sur un substrat d’Al₂O₃(0001). Un f

APA, Harvard, Vancouver, ISO, and other styles

50

Wollmann, Philipp. "Synthese und Funktion nanoskaliger Oxide auf Basis der Elemente Bismut und Niob." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-85784.

Full text

Abstract:

Am Beispiel von ferroelektrischen Systemen auf Bismut-Basis (Bismutmolybdat, Bismutwolframat und Bismuttitanat) und von Strontiumbariumniobat werden neue Möglichkeiten zur Synthese solcher Nanopartikel aufgezeigt. Die Integration der Nanopartikel in transparente Nanokompositmaterialien und die Entwicklung neuer Precursoren für die Herstellung von Dünnschichtproben gehen den Untersuchungen zur Anwendung als elektrooptische aktive Materialien voraus. Durch weitere Anwendungsmöglichkeiten in der Photokatalyse, dem Test dampfadsorptiver Eigenschaften mit Hilfe eines neuartigen Adsorptionstesters (

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!